Sharpener for knives.



PATENTED JULY 3, 1906.

J. DOMAGOLA. SHARPENER FOR KNIVES. APPLICATION FILED SEPT. 2. 190a.

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UNITED STATES PATENT OFFICE.

JOHN DOMAGOLA, OF PERU, ILLINOIS, ASSIGNOR TO DAWSON M. 'HUMISTON, OF AURORA, ILLINOIS.

SHARPENER FOR KNIVES- Specification of Letters Patent.

Patented July 3, 1906.

To all whom it may concern:

Be it known that 1, JOHN DOMAGOLA, a citizen of the United States, residing at Peru, in the county of La Salle and State of Illinois, have invented certain new and useful Improvements in Sharpeners for Knives, &c., of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to sharpening and scouring devices for cutlery and tools.

The object of the invention is to produce a simple and cheap holder for a sheet of abrading material, by which the sheet may be firmly held and which as a whole shall be of convenient form for use.

The invention consists of certain details of construction and combination of parts, substantially as hereinafter pointed out in the claims.

Figure 1 is a side elevation of my sharpener complete. Fig. 2 is a top plan of the sheetholder. Fig. 3 is a perspective view of the sheet-holder. Fig. 4 is a plan of clampingwire. Fig. 5 is a broken edge View of a modification.

It is common to make a plate or stick and attach thereto a sheet or sheets of emery-paper, emery-cloth, or abrading material. My invention is an improved device of this character.

A indicates a plate of metal, preferably struck up to form a flat or slightly concave portion.

B is the bed to which the abrading-sheet K is attached. One end of the plate is turned back, as at C, forming a hook, into the angle of which one end of sheet K is tucked.

A bend or offset D in the plate connects part B to handle E. The sheet K extends along the part B, with its abrading-face out- Ward, and the opposite end to that held by the hook extends up the bend of the plate and is there clamped, as will be described.

On the back of plate B are bearings F for the pivotal portions of a clamp G. This clamp is preferably Wire bent into the form shown.

The bearings F may be struck up on plate B or may be separate pieces soldered or otherwise attached thereto.

The clamp G has a loop G, which passes across the face of the bend D. .The loop G is shown in Fig. 1 as bent upward from the plane of the lever portion of the clamp.

The clamp-lever G when lifted from plate B, as in Fig. 3, turns down the bar of loop G, and when the handle G of the clamp is pressed back against plate B the sheet K is both stretched and clamped by the movement of the bar G of the clamp.

A hook H on the back of plate B serves tohold down the handle G, and thus clamp sheet K in place.

The Wire of handle G springs enough to permit engagement of the handle by the hook H.

In the modification, Fig. 5, the clamp G is pivoted at the bend in the plate, and the ends of the clamp hook over the handle.

This device is very cheaply constructed and is of convenient form and size as a sharpener. The abrading-sheet should be as wide as the part B and somewhat longer, so as to overlap the ends of said part B.

I claim- 1. A holder for an abrading-sheet, consisting of a plate with a hook at one end, a floor against which the abrading-sheet will rest w en extended between said hook and a clamp at the other end of said floor, a bend or offset at the end of said floor, and a handle beyond the bend, and a clamp consisting of a looped wire pivoted to the back of the plate near the bend and extending across the face of the bend.

2. The combination with a plate having a hook at one end, a floor, and a bend or offset at the end of the floor remote from the hook, of a clamp consisting of looped wire pivoted at the back of the plate, having a bar extending across the face of the bend in the plate, and means for holding said clamp.

In testimony whereof I aflix my signature in presence of two witnesses.

' JOHN DOMAGOLA. Witnesses:

GERTRUDE K. PARKS, L. W. CLARK. 

